Now behind bars at a high security prison in the western Belgian city of Bruges, Abdeslam was interrogated over the weekend by investigators still trying to piece together how the Belgian national managed to evade capture for more than four months -- apparently hiding right under their noses.

As CBS News correspondent Charlie D'Agata reports, the international manhunt for Abdeslam ended just about five blocks from the house where he grew up. Having been shot in the leg, video shows him being dragged out of a building and into an unmarked police car with a hood over his head.

Belgian Foreign Minister Didier Reynders revealed over the weekend that Abdeslam may have been planning further attacks.

"It's maybe the reality, because (as) I said, we have found a lot of weapons, heavy weapons," Reynders said in response to a question from CBS Radio News correspondent Cami McCormick.

A lot of weapons, said D'Agata, found in an earlier raid, and Abdeslam's fingerprints.

That last claim triggered a formal complaint from Sven Mary, Abdeslam's lawyer, who said it's not only a breach of his client's confidentiality, but it could stop him from speaking in the future. Mary even told Belgian media he could take counter legal action over the "violation... I cannot let it go unchallenged."

"Now he's collaborating with the justice, and it's an important matter because he has a lot of information that interests (the) judge and police officers," Mary told CBS News.

Information including the names of the people who helped him slip away from Paris and find his way back to his old neighborhood of Molenbeek -- right under the noses of Belgium's law enforcement.

Belgium's law enforcement authorities issued a new appeal on Monday, meanwhile, for the public to help them track down one of the men they suspect helped Abdeslam.

Prosecutors in Belgium said Monday they wanted to find and speak with Najim Laachraoui, 24, whose DNA was found at a home in the town of Auvelais believed to have been used as a safe-house by Abdeslam. They said Laachraoui travelled to Syria in 2013 and was also in a Mercedes carrying Abdeslam and another man when they were stopped at the Austria-Hungary border. Nobody was detained during that traffic stop.